screenrant.com –
While such S.H.I.E.L.D. agents as the costumed Natasha Romanoff/Black Widow (Scarlett Johansson) and Clint Barton/Hawkeye (Jeremy Renner) – not to mention, everyone’s favorite straight-laced agent, Phil Coulson (Clark Gregg) – have shown up in the Marvel flicks which laid the groundwork for this summer’s The Avengers, there’s one important S.H.I.E.L.D.

The Avengers (2012 film) - Wikipedia
Marvel's The Avengers (classified under the name Marvel Avengers Assemble in the United Kingdom and Ireland), or simply The Avengers, is a 2012 American superhero ...